000 00312nam a2200133Ia 4500
008 220216s9999 xx 000 0 und d
100 _aAllen P W
245 0 _aEvolution of market grades
260 _bRubber Developments
_c1964
300 _a90-97
650 _aHevea
650 _aRubber market
942 _cJS
999 _c59059
_d59059